0w20 Vs 5w20 (Real Differences With The Table)

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A thing you should need to know about engine oil is that there are two types. These include synthetic and mineral oils, which come from natural sources. The former consists of artificially made chemical compounds while the latter comes from natural sources! Synthetic oils are most preferred as they function well in extreme temperatures. Talking about synthetic engine oils, we have to touch on the 0w20 vs. 5w20 discussion.

0W20 and 5W20 are both low-viscosity, high-quality synthetic oils that can greatly optimize fuel economy. When you use such advanced full-synthetic oil formulation, your engine will also perform at its highest efficiency. Synthetic oils are also in a heated debate. Both 0w20 vs 5w20 have many different attributes that make them attractive to car enthusiasts and mechanics alike, making it difficult for people to choose which oil is best for their needs. Here is the 0w20 vs. 5w20 With a Table to find differences at a glance.

DefinitionThe 0w20 is less viscous in low temperatures. This means it will perform better than its counterpart.The 5w30 discussion is a high-performance oil, which finds extensive use in light petrol and diesel engines.
ViscosityViscosity index 160Viscosity index 173
TemperatureSuited temperature is moderate in winter and summer.Extreme Winter and Moderate Summer are good for this oil.
FlashpointFlashpoint 230ºC Flashpoint 224ºC
UsedUsed in SUVs and Vans5w20 oil is used in Toyota Corolla, hybrid engines, and gasoline engines.
Fuel economyGood fuel economyBest in the market
PerformanceThis standard engine oil can be used for everyday use at a subtle temperature.This engine oil with additives added works extra for your rough driving.
Detergents0w20 contains only synthetic oil.5w20 has both synthetic and conventional oil.
Viscosity temperatureSuited temperature is moderate winter and summer.Viscosity in 212ºF is 44.8
Price0w20 price is around $20-$25.5w20 price is around $18-$22.

0w20 Vs 5w20: Main Differences


Oil viscosity is the thickness of a fluid at a given temperature. Thicker oils are better suited for hotter temperatures, while thin oils work best in cold temperatures due to their lower viscosity and ease of pouring when compared to thicker oils. When the oil has less than 0 weight, it means that it is thinner than 5 weight (5w20), which indicates greater flexibility in its properties over heavier lubricants like 0w20.

Built Quality

The 0w20 is less viscous in low temperatures. This means it will perform better than its counterpart, the 5w30 discussion. The high-performance oil, which finds extensive use in light petrol and diesel engines, has a long life span due to its additive package that keeps deposits from building up on pistons and valves while you drive.


Detergents are additives used to enhance the efficiency of engines during locomotion. They can be used for cleaning engines when deposits form on crucial motor parts, which is helpful in minimizing corrosion and rust formations in engine oil. 5w20 has both synthetic and conventional oil, while 0w20 only contains synthetic oil.

Fuel economy

The best fuel for the engine is based on which type of engine and how old it is. 5w20 works well in moderate temperatures, but 0W-20 is more efficient because it can work at extreme temperatures. The fuel economy of oil relies on how quickly the oil can absorb heat from inside or outside an engine as well as its ability to perform under different temperatures.

Temperature range

The 5w20 oil viscosity is best for colder conditions, while 0w20 is suited to use in warmer weather. The engine will be able to operate at optimal performance when these oils are mixed with each other under a certain ratio that can vary depending on your vehicle’s specifications.


5w30 engine oil for your rough driving. This type of 5w20 is a high-performance, extended-life engine oil that contains additives to help protect the bearings and reduce friction wear in colder temperatures. 0w20 standard motor oil can be used day-to-day with no special temperature considerations.


The two oils will be less dense at lower temperatures. This attribute makes them ideal choices as they won’t encounter any friction or get too cold in the engine and heat up quickly. The 0w20 has a lower grade, meaning that it performs better than the 5w20 at high-temperature conditions but not too extreme degrees.

Similarity of 0w20 Vs 5w20

Fuel economy

Both 0W20 and 5W20 grades of synthetic oil are low-viscosity and high-quality oils that can massively optimize fuel economy in fair-weather temperatures. They have the same properties, whether used in cold or fair weather conditions.


0w20 vs. 5w20, which performs better? In general, both of the oils perform well in similar conditions with a slight edge for 0w- the oil flows more freely when it is cold and starts more easily in such conditions. They have some differences though.


There are two types of gasoline engines. The 0w20 motor is the most commonly used and it has a fuel efficiency rating of around 25 miles per gallon (mpg) for cars or SUVs that have automatic transmissions, but only 18 mpg in manual transmission models. 5w20 motors are also common across different manufacturers – they offer similar performance to 0w20 engines with improved fuel economy at 30 mpg highway driving conditions.

5w20- Best for Warmer Climate

5w20 oil is best for the warmer climate because it resists thinning out as much as 0w20. You should also consider how often you drive on the highway if that’s a frequent activity in your life. If you do not frequently go on highways, then 5W30 or 10W40 would be better choices.


  • It offers improved overall engine performance and better environmental conditions.
  • Good fuel economy
  • Use at subtle temperature
  • Suited temperature is moderate in winter and summer.


  • 0W-20 can be more costly than 5W-30.
  • Low viscosity

0w20- Best for Fuel Efficiency

0W-20 is the best oil for fuel economy because it can work at extreme temperatures and therefore provide better fuel economy. The efficiency of 0w-20 relies on how quickly it can absorb heat from inside or outside an engine as well as its ability to perform under different temperatures.


  • The engine parts are also secured from rusting. 
  • The product reduces friction between moving components.
  • It increases motor oil’s lifespan.
  • Reduce wear and tear while keeping the engine cool.


  • Less viscosity-temperature
  • Less flash point temperature


Can I mix 0W-20 oil with 5W-20 oil?

When it comes to mixing or interchanging different viscosity-grade oils, there are some things you should know. For example, 5W-20 is always synthetic and 0W-20 may be synthetic, blend in with conventional oil, or even both of them are fully synthetic but their additives can be incompatible. So the best option is to stay away from that mixed situation by not mixing two different viscosity grade oils together at all.

Is 0W-20 and 5W-20 available as synthetic oil?

0W-30 oils are formulated with synthetic or semi-synthetic base oil and additives, making them reliable for use under freezing temperatures. Since 0W-20 is the lower viscosity level of this range, it’s also more suitable for conventional, low mercury engine oils (5W – 15) as well as fully synthetic oil types such as 5w40 and 0w20.

Can I use 0W-20 instead of 5W-20?

The 0W-20 grade is a thin oil viscosity grade that is typically used in cold temps. It’s also recommended for diesel and gasoline engines for cold starts and lower oil consumption. The 5W-20 has a similar viscosity level to the 0W-20, but it’s slightly thicker than the latter.

Final Words

It is important to understand your engine and how it works as well as the different routes oil can take. For modern engines in the northern US, we recommend using 0w20 for better fuel economy and superior protection for the engine. With an older or warmer climate, 5w20 Synthetic Oil is best because of its efficiency in fuel savings plus added lubrication benefits. The decision ultimately becomes one that you have to make on what type of oil will meet your needs best.

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